Fluorescent visualization for turbomachine research

Abstract

The quantitative gas fluorescence flow visualization technique using 2,3 butanedione as a tracer, has been refined and improved. Upgrading of the imaging system is responsible for the principal improvement. The technique has been applied to air flows in order to demonstrate its suitability to conventional compressor -testing. The possibility of using butanedione to measure static gas temperature has been explored by modeling. It has been found to be feasible only when a time lag after excitation of 1 ms is acceptable.